package uia.alumni.web;

import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import uia.alumni.form.*;
import java.util.*;

/**
 * This Servlet is a Demonstration of the Form Validation. 
 * @author Simon Zimmermann.
 */
public class FormTestServlet extends HttpServlet {

    /** 
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();

        // Create a new Form Object. This object will be used to validate and get data.
        Form form = new Form(request);
        try {
            form.newField("website", "url");
            form.newField("born", "date");
            form.newField("name", "text");
            form.newField("contact", "email");

        } catch (Exception e) {
            out.println("<pre>");
            out.println(e.getMessage());
            out.println("</pre>");
        }
        try {
            out.println("<h1>Servlet FormTestServlet at " + request.getContextPath() + "</h1>");
            if (form.isValid()) {
                out.print("Form is valid");
            } else {
                out.print("False!");
                for (FormField ff : form.getFieldsList()){
                    out.print("<p>" + ff.getName());
                        if(ff.isFieldValid()){
                            out.println(" - True");
                        }else{
                            out.println(" - False");
                        }
                }
            }
            
        } catch (Exception ed) {
            out.println("<pre>");
            out.println(ed.getMessage());
            out.println("</pre>");
        } finally {
            out.close();
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}

/*    Map m = new HashMap();
Enumeration e = request.getParameterNames();
while (e.hasMoreElements()) {
String key = (String) e.nextElement();
String[] val = request.getParameterValues(key);
m.put(key, val);
}
Iterator it = m.entrySet().iterator();
out.print("<ul>");
while (it.hasNext()) {
Map.Entry pairs = (Map.Entry) it.next();
out.println("<li><strong>" + pairs.getKey() + "</strong> = " + pairs.getValue());
}
out.print("</ul");*/
